2147 search results for "map"

reading shape files in R

June 24, 2012
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reading shape files in R

If I would like to adjust a shape file I normally used the way over an excel file or a text file to get a table and to join this with an existing shape file. Due to the sp and rgdal packages in R you can manipulate shapefiles directly in R: now lets map the

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Mexico City’s Metro Statistics

June 24, 2012
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Mexico City’s Metro Statistics

I used R and ggplot2 to make a bubble map of Mexico City’s Metro passenger count from January to February 2012. The statistics are stunning, some stations for example Indios Verdes, reached 10 million passengers in jus three months. You can see the code below and get the data for the project here.The post Mexico City’s Metro Statistics...

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Using twitteR to see, what german press secretary tweets about

June 24, 2012
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Using twitteR to see, what german press secretary tweets about

Find the HTML-slides here, and the .Rmd-file that was used to generate here. How to deal with .Rmd-files, see here What this is about These are my first steps to play around with the interface from R to twitter, using the twitteR-package. We will load the latest 1500 (maximum the API allows) tweets from the

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Nonlinear systems

June 21, 2012
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Nonlinear systems

There is a long standing debate if financial systems are truly random or contain some structure. From the study of non-linear dynamical systems and chaos one finds it is possible that even perfectly deterministic systems can appear to be random. … Continue reading →

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An example on sentiment analysis with R

June 21, 2012
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An example on sentiment analysis with R

by Yanchang Zhao, RDataMining.com There is a nice example on sentiment analysis with R at <http://viksalgorithms.blogspot.com.au/2012/06/tracking-us-sentiments-over-time-in.html>. In the example, the Wikileaks cable corpus is analyzed to track US sentiments of other countries and their presidents over time. The example describes … Continue reading →

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Body Weight in the United States – Part 3, "Contributing Factors"

June 20, 2012
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Body Weight in the United States – Part 3, "Contributing Factors"

Carbs In Part 2 of this series, micro-nutrients were cited as a non-factor for weight gain. This is not the case with macro-nutrients (carbohydrates, fats, proteins, water). While fats, proteins and water are essential (without them you could no...

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UseR 2012 highlights

June 20, 2012
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UseR 2012 highlights

The eighth annual R user conference, UseR! 2012, has come and gone — and what an event it was! I've been to five useR! conferences so far, and each one improves upon the last. This year's conference at Vanderbilt was the best so far: an outstanding location (my first visit to Nashville, a great city), excellent facilities (the lecture...

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Color Palettes in RGB Space

June 20, 2012
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Color Palettes in RGB Space

Introduction I've recently been interested in how to communicate information using color. I don't know much about the field of Color Theory, but it's an interesting topic to me. The selection of color palettes, in particular, has been a topic I've been faced with lately. I downloaded 18 different sequential color palettes from Cynthia Brewer's

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Notes from A Recent Spatial R Class I Gave

June 19, 2012
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Below is a link to a pdf (compiled with the amazing knitr package) and some accompanying data for a recent short course I gave on basic spatial data import/analysis/visualization in R. The class was only two hours and some of the participants were bein...

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Notes from A Recent Spatial R Class I Gave

June 19, 2012
By

Below is a link to a pdf (compiled with the amazing knitr package) and some accompanying data for a recent short course I gave on basic spatial data import/analysis/visualization in R. The class was only two hours and some of the participants were bein...

Read more »